Ignition Advance Modes and Corrections

The ECM calculates the IGT signal on time based on engine operating modes and conditions. The IGT signal is based primarily on the crankshaft position sensor signal, engine load, temperature, knock sensor, etc.

Initial Ignition Timing Angle

Initial Ignition Timing Angle Basic Ignition Advance Angle

Corrective Ignition Advance Control

Warm-Up Correction Over-Temperature Correction Stable Idling Correction EGR Correction

Air-Fuel Ration Feedback Correction Knocking Correction Torque Control Correction Other Correction

Maximum And Minimum Advance Angle Control

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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